vscode convert ruleset to editorconfig code example

Example: editorconfig vs ruleset

"Starting in Visual Studio 2019 version 16.5, ruleset files are deprecated in favor of the EditorConfig file for analyzer configuration for managed code.'
https://docs.microsoft.com/en-us/visualstudio/code-quality/use-roslyn-analyzers?view=vs-2019#convert-an-existing-ruleset-file-to-editorconfig-file